Home / 99,030.40-148,545.60-91,427.20

Finding the Fourth Proportional to 99,030.40, 148,545.60 and 91,427.20

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Solution

The fourth proportional to 99,030.40, 148,545.60 and 91,427.20 is: 137,140.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,030.40 : 148,545.60 = 91,427.20 : x
  2. Step 2: Convert to fraction form
    99,030.40/148,545.60 = 91,427.20/x
  3. Step 3: Cross multiply
    99,030.40x = 148,545.60 × 91,427.20
  4. Step 4: Simplify right side
    99,030.40x = 13,581,108,280.32
  5. Step 5: Solve for x
    x = 13,581,108,280.32/99,030.40
  6. Step 6: Final answer
    x = 137,140.80

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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.