Home / 109,916.80-151,637.04-64,574.32

Finding the Fourth Proportional to 109,916.80, 151,637.04 and 64,574.32

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Solution

The fourth proportional to 109,916.80, 151,637.04 and 64,574.32 is: 89,084.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,916.80 : 151,637.04 = 64,574.32 : x
  2. Step 2: Convert to fraction form
    109,916.80/151,637.04 = 64,574.32/x
  3. Step 3: Cross multiply
    109,916.80x = 151,637.04 × 64,574.32
  4. Step 4: Simplify right side
    109,916.80x = 9,791,858,744.81
  5. Step 5: Solve for x
    x = 9,791,858,744.81/109,916.80
  6. Step 6: Final answer
    x = 89,084.28

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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.