Home / 147,030.60-220,545.90-76,931.40

Finding the Fourth Proportional to 147,030.60, 220,545.90 and 76,931.40

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Solution

The fourth proportional to 147,030.60, 220,545.90 and 76,931.40 is: 115,397.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,030.60 : 220,545.90 = 76,931.40 : x
  2. Step 2: Convert to fraction form
    147,030.60/220,545.90 = 76,931.40/x
  3. Step 3: Cross multiply
    147,030.60x = 220,545.90 × 76,931.40
  4. Step 4: Simplify right side
    147,030.60x = 16,966,904,851.26
  5. Step 5: Solve for x
    x = 16,966,904,851.26/147,030.60
  6. Step 6: Final answer
    x = 115,397.10

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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.