Home / 105,219,000.80-157,828,501.20-86,323,320.80

Finding the Fourth Proportional to 105,219,000.80, 157,828,501.20 and 86,323,320.80

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Solution

The fourth proportional to 105,219,000.80, 157,828,501.20 and 86,323,320.80 is: 129,484,981.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,219,000.80 : 157,828,501.20 = 86,323,320.80 : x
  2. Step 2: Convert to fraction form
    105,219,000.80/157,828,501.20 = 86,323,320.80/x
  3. Step 3: Cross multiply
    105,219,000.80x = 157,828,501.20 × 86,323,320.80
  4. Step 4: Simplify right side
    105,219,000.80x = 13,624,280,340,470,784
  5. Step 5: Solve for x
    x = 13,624,280,340,470,784/105,219,000.80
  6. Step 6: Final answer
    x = 129,484,981.20

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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.