Home / 138,574,428.40-207,637,693.80-87,364,802.80

Finding the Fourth Proportional to 138,574,428.40, 207,637,693.80 and 87,364,802.80

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Solution

The fourth proportional to 138,574,428.40, 207,637,693.80 and 87,364,802.80 is: 130,906,014.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,574,428.40 : 207,637,693.80 = 87,364,802.80 : x
  2. Step 2: Convert to fraction form
    138,574,428.40/207,637,693.80 = 87,364,802.80/x
  3. Step 3: Cross multiply
    138,574,428.40x = 207,637,693.80 × 87,364,802.80
  4. Step 4: Simplify right side
    138,574,428.40x = 18,140,226,172,683,784
  5. Step 5: Solve for x
    x = 18,140,226,172,683,784/138,574,428.40
  6. Step 6: Final answer
    x = 130,906,014.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.