Home / 147,916.80-221,875.20-130,420.80

Finding the Fourth Proportional to 147,916.80, 221,875.20 and 130,420.80

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Solution

The fourth proportional to 147,916.80, 221,875.20 and 130,420.80 is: 195,631.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,916.80 : 221,875.20 = 130,420.80 : x
  2. Step 2: Convert to fraction form
    147,916.80/221,875.20 = 130,420.80/x
  3. Step 3: Cross multiply
    147,916.80x = 221,875.20 × 130,420.80
  4. Step 4: Simplify right side
    147,916.80x = 28,937,141,084.16
  5. Step 5: Solve for x
    x = 28,937,141,084.16/147,916.80
  6. Step 6: Final answer
    x = 195,631.20

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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.