Home / 124,875.90-172,329.66-70,428.78

Finding the Fourth Proportional to 124,875.90, 172,329.66 and 70,428.78

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Solution

The fourth proportional to 124,875.90, 172,329.66 and 70,428.78 is: 97,192.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,875.90 : 172,329.66 = 70,428.78 : x
  2. Step 2: Convert to fraction form
    124,875.90/172,329.66 = 70,428.78/x
  3. Step 3: Cross multiply
    124,875.90x = 172,329.66 × 70,428.78
  4. Step 4: Simplify right side
    124,875.90x = 12,136,967,711.61
  5. Step 5: Solve for x
    x = 12,136,967,711.61/124,875.90
  6. Step 6: Final answer
    x = 97,192.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.